Home / 30,364.32-41,898.64-18,428.16

Finding the Fourth Proportional to 30,364.32, 41,898.64 and 18,428.16

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Solution

The fourth proportional to 30,364.32, 41,898.64 and 18,428.16 is: 25,428.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,364.32 : 41,898.64 = 18,428.16 : x
  2. Step 2: Convert to fraction form
    30,364.32/41,898.64 = 18,428.16/x
  3. Step 3: Cross multiply
    30,364.32x = 41,898.64 × 18,428.16
  4. Step 4: Simplify right side
    30,364.32x = 772,114,841.70
  5. Step 5: Solve for x
    x = 772,114,841.70/30,364.32
  6. Step 6: Final answer
    x = 25,428.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.